Improved mode of treating diseases bt vacuum



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States t titi waessaeew .geant f JOHN G. 'HADFIELn M. D., or CINCINNATI, OHIO.

Letters Patent No. 85,303, dated .December 29, 1868; antedated December 15,' 1868. I

IMPROVED MODE OF TREATING' DISEASES BTV-VACUUM.

The Schedule referred to in these Letters Patent and making part of 'the same.

To all whom 'it 'ma/y concern Be it known that I,'JOHN G. HADFIELD, M. D., of Cincinnati, in the county of Hamiltomand State of Ohio, have invented certain new and useful .Improvements in Vacuum-Apparatus for Treating. Diseases; and I do hereby declare that the following isa full, clear, and exact description thereoffrefer`ence being `had to the accompanying drawings, making part of this specification, and to the letters of reference marked thereon, like letters indicating like parts wherever 1 they occur. v

To enable others skilled in the art to construct and use my invention, I will proceed to describe it.

My invention consists' in certain improvements in v the apparatus used in the treatment of diseases by vacuum, as heretofore patented to myself.

Figure 1 is vertical section of vthe lower portion of air-pump to be used with the apparatus.

Figures 3 and 5 are side elevations of the vacuumvessels for the treatment bf limbs.

Figures 2 and 4 are views of portions shown in section.

In the treatment or persons having diseased limbs, by the vacuum-process, it is necessary to have a rest v`to support the limb, while in the vessel; and it is desirable A to have the means of adjusting this rest from the outside. l

In figs. 3 and 5, D represents the vessel in whichthe limb is inserted for treatment, R representing the rubber, or other iiexible mateIiaL-'used for seeming it, air-tight, to the limb.

I construct, a rest, E, as shown, and secure it t the outside of the vessel D, by inserting its stem into a socket, F, and securing it at any desired height, by means of a set-screw, c, as represented in figs. 3 and 4.

In order to render the rest adjustable laterally as well as vertically, I also sometimes attach the rests E, byV means of a band, H, which is secured rigidly to the vesselD, at .suitable points, with a suflicient space between it and the vessel to permit the insertion of the stem I between them, the stems I being bent or formed with a shoulder, to rest upon the upper edge ofthe band H, as shown in iig. 5.

In this case the stem E is made hollow, to lit over the stem I, and is adjusted thereon, and held -in position by a spring-bolt, d, fitted in asocket, and having its inner end engaging with holes in the stem I.

By these means I provide the apparatus Withfrests\ that can be adjusted so as to adapt them to the supporting of the limbs in any required position; and by arranging the restsupon the outside of the vessels; their position or adjustment can be altered at any time during the process, without removing the limb or admitting the air.

In constructing my improved air-pump, to be usedv with the apparatus, I make the base' in the form shown in iig. 1, and screw the body of the pump into it;` A representing the lower .portion of the chamber of the Pump' Into this base, on opposite sides, I screw a tube, B, the inner end extending into the 4chamber A, and lbeing there provided with a check-valve, o, which permits the air to be drawn inward lthrough the tubes B, .but preventing it from passing outward through them.

Each of these tubes B, I provide with a two-way cock, C, the passages inthe cocks being arranged as shown in iig. 2; that iste say, they have a passage,

u, extending entirely through them, while another passage, e, extends from one side, at right angles to and intersecting the passage au By this means, it will be seen that the cock C, when turned, as represented in iig. 2, opens the passage direct through tube B, but that when given a quarter turn, so'as to bring the passage ein line with the passage inY tube B, the latter will be closed.

By turning the cock C, so as to bring the passage e` upon the opposite side, as indicated in red, in the left-hand tube of fig..1, the passage e will then be brought oppositea hole, n, made in the side of tube B, thereby opening a communication from v`the passage in the-'tube-B. from both sides ofthe cock, with the outside. f ,I

The advantages of this arrangement are, that the pump can be connected with and used to exhaust two vessels at once; or, by adjusting the cocks, the air can Abe exhausted from one vessel, while itl is at vthe Sametimepermitted Ato flow into the other, through the outside passage n, and thus two parties canbe operated ,upon at once. I

VItis obvious that by adding to size of the pump, the number of tubes may be increased, and .thus the capacity ofthe apparatus be still further increased. A

By these improvements, the apparatus isrendered much more convenient than as heretofore constructed. Having thus described my invention,

1 The combination, with the chamberof an airpump, vof the tube or tubes B, with the passage or hole n, and the cock C, having the passages a and e,

arranged substantially as described.

2. The combination of the external adjustable rests E with the vacuum-vessels D, substantially as den `scribed Witnesses:

A. O. BAINrEn, 1D. Y; Lovvn.l

JOHN e. HADFIELD, M. D. 

